9897838 has 8 divisors (see below), whose sum is σ = 14912280. Its totient is φ = 4927080.

The previous prime is 9897829. The next prime is 9897847. The reversal of 9897838 is 8387989.

It is an interprime number because it is at equal distance from previous prime (9897829) and next prime (9897847).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10348 + ... + 11263.

It is an arithmetic number, because the mean of its divisors is an integer number (1864035).

Almost surely, 2^9897838 is an apocalyptic number.

9897838 is a deficient number, since it is larger than the sum of its proper divisors (5014442).

9897838 is a wasteful number, since it uses less digits than its factorization.

9897838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21842.

The product of its digits is 870912, while the sum is 52.

The square root of 9897838 is about 3146.0829613982. The cubic root of 9897838 is about 214.7072850923.

The spelling of 9897838 in words is "nine million, eight hundred ninety-seven thousand, eight hundred thirty-eight".